The specs are configured to run against http://localhost:7474 by default. In order to change this in your local setup you can set the NEO4J_URL environment variable on your system to suit your needs.
To make this easier, the neo4j spec suite allows you to add a .env file locally to configure this. For example, to set the NEO4J_URL you simply need to add a .env file that looks like this:
NEO4J_URL=http://localhost:7475